Finally decided to try asking my own question instead of diagnosing through what others have posted. Idle is great, relaxing cruise speed is great. Cleaned and rebuilt all 3 carbs, rebuilt fuel pump, replaced main fuel line and bulb, replaced fuel filter, replaced plugs. From what I've read it seems like it hits S.L.O.W mode, just will NOT go above 3200 rpms, guessing tach is off since limp seems to hit around 2500. I unplugged temp sensor while on water and no change, tell tale had great constant flow. Unhooked fuel pump and squeezed bulb to see if fuel is getting past the diaphragm but all was good there. Ran separate fuel tank to see if air flow was an issue, no change. Compression tested all 3 cylinders and read out 117psi across the board. I'm sure I'm forgetting something but I'm hoping one of you will have the right answer. Thanks!